202667-45-6 Usage
General Description
1,2,3,5-Tetrahydro-6-methyl-S-indacene, also known as tetrahydrodibenzocycloheptene, is a chemical compound with a complex molecular structure. It is a polycyclic aromatic hydrocarbon that is used in various industrial and research applications. It is a stable, colorless liquid with a strong, aromatic odor. It is primarily used as a starting material for the synthesis of other organic compounds, and it is also used as a solvent in certain chemical reactions. Additionally, its unique chemical properties make it useful for research purposes in the fields of organic chemistry and material science. However, it is important to handle and store 1,2,3,5-Tetrahydro-6-methyl-S-indacene with caution, as it can be hazardous if not handled properly.
Check Digit Verification of cas no
The CAS Registry Mumber 202667-45-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,6,6 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 202667-45:
(8*2)+(7*0)+(6*2)+(5*6)+(4*6)+(3*7)+(2*4)+(1*5)=116
116 % 10 = 6
So 202667-45-6 is a valid CAS Registry Number.
InChI:InChI=1/C13H14/c1-9-5-12-7-10-3-2-4-11(10)8-13(12)6-9/h5,7-8H,2-4,6H2,1H3
202667-45-6Relevant articles and documents
Dimerization method for high activity and selectivity propylene
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Paragraph 0058; 0059; 0060; 0061; 0062; 0063, (2017/06/02)
The invention provides a dimerization method for high activity and selectivity propylene. The method includes the following steps that methylaluminoxane (MAO) or modified methylaluminoxane (MMAO) is used as a catalyst promoter, and the propylene is subjected to a dimerization reaction under the catalytic action of an ethylidene bridged substituted diindene titanium group metal complex catalyst; and the ethylidene bridged substituted diindene titanium group metal complex catalyst is an internal compensation (meso-) ethylidene bridged substituted diindene titanium group metal complex catalyst or a racemization (rac-) ethylidene bridged substituted diindene titanium group metal complex catalyst. Compared with the prior art, the dimerization method provided by the invention is high in catalytic activity and high in dimerization selectivity, the rate can reach 99%, numerous follow-up operation steps in separation of products with the high degree of polymerization are omitted, the industrialization cost is reduced, and the industrial production needs can be met.
